This book presents an understanding of the concept of Countering Violent Extremism from a critical terrorism studies perspective using case studies from different countries while examining the issues it raises.

This article researches the public perception of terrorist attacks by measuring the importance the public assigns to attributes of terrorist attacks.

This book contextualizes the use of terror as part of wider movements of political contention, demonstrating that terroristic innovation occurs as part of wider historical processes rather than in a vacuum.

Refugees’ effect on domestic terrorism is conditioned by host-country social perception (attitude about living next-door to foreigners) and economic competition. These hypotheses are tested cross-nationally from 1995-2014 leveraging data from the World Values Survey.

As terrorism scholars, we are intrigued by those who engage in violence. We study their motivations, tactics, ideology, organisational structures, and pathways to (de-)mobilisation, hoping to better understand terrorism and how we can counter it. Far less attention is paid to what happens after an attack…

This report examines the questions

This paper investigates possible convergence of issue salience of terrorism among citizens within the European Union for ten jihadist attacks in the period 2015–2017 using Eurobarometer survey data.

In this article, Bart Schuurman and Sarah Louise Carthy conduct further research into the understanding of the causes of terrorism by assessing differences and similarities between left-, right- and jihadist extremists and terrorists. The article draws on the Analysen zum Terrorismus, one of the most…

This article presents an in-depth evaluation of a specialized reintegration initiative within the Dutch Probation Service focused on individuals convicted or suspected of involvement in terrorism.

This paper contributes on an increasing body of work on radicalisation. It specifically focuses on what distinguishes individuals whose behavioural radicalisation includes involvement in terrorist violence from those whose behavioural radicalisation does not.

This article presents the findings of an explanatory study into the perceptions of Dutch Muslims in The Hague concerning pre-emptive counter-extremism and de-radicalisation policies.

In this article, Tokdemir & Klein examine the strategic actions of governments against domestic terrorist groups and domestic terrorist groups’ reactions to such actions.

In this publication, the authors explore the reality of accessing and interviewing hard-to-reach populations such as extremists and terrorists

The book addresses the question “How and why do people become involved in European homegrown jihadism?

This research sets out to answer the following questions:

In recent years, the use of primary data in terrorism research has increased. In order to maximise the benefits of this trend, we want to encourage terrorism scholars to implement open science practices more systematically. This article therefore presents different avenues towards open and reproducible…

On 8 March 2023 Helen Duffy, Professor of International Human Rights and Humanitarian Law in Leiden, published a monograph on Global Trends in Counter-terrorism and the Implications for Human Rights in Africa.

The second and final report on the Netherlands‘ crime-terror nexus has analysed all fourteen profiles of individuals arrested in 2015 for offences of terrorism.

What is the current relevance of the ethics of counterterrorism and what is the added value of ethics support within the practice of counterterrorism?

This article provides a comprehensive analysis of the Islamic State's use of images taken by drones, drawing on a dataset of ISIS propaganda images from October 2016 to December 2018.

On 15 March, the 28-year-old Australian right-wing extremist Brenton Tarrant committed a terrorist attack on two mosques in Christchurch in New Zealand. Jelle van Buuren, Bart Schuurman, Daan Weggemans and Tahir Abbas all working at the Institute of Security and Global Affairs (ISGA) have been approached…

On 7 and 8 November 2024, the International Centre for Counter-Terrorism (ICCT), the Institute of Security & Global Affairs at Leiden University, and The Netherlands’ National Coordinator for Security and Counter Terrorism (NCTV) partnered to host a ‘Blue-Sky’ Terrorist Exploitation of Artificial…

Terrorist groups adapt to environmental changes to maintain power. This project provides new insights by developing a theory of strategic target selection and using big data analytics and machine learning to test these hypotheses.

Jeanine de Roy van Zuijdewijn, PhD candidate at ISGA, explained the dilemma countries face in the aftermath of terror attacks.

Why does one person radicalize to involvement in terrorist violence within a group-based context, while another engages in this form of violence alone?

The ‘Community Resilience Fund’, a programme of the Canadian federal government, approved a research grant for Dr. Bart Schuurman of the Institute of Security and Global Affairs.

This article explores how ISIS and the Taliban have fostered support through their parallel legal systems.

This article provides an in‐depth assessment of lone actor terrorists’ attack planning and preparation.

The term “Lone Actor” has been applied to a variety of violent individuals who are thought to act out of ideological motivations using terrorist tactics.

‘Countering violent extremism – the international deradicalization agenda’ is the name of the book Tahir Abbas published last month. In this interview the associate professor in Terrorism and Political Violence at ISGA tells about the backgrounds and goals of the book.

Jelle van Buuren, Assistant Professor at the Institute of Security and Global Affairs, in conversation with the NOS, warns to remain alert despite the reduced threat level for terrorism.

Academic research on terrorism is getting better all the time. This is the conclusion of university lecturer Bart Schuurman after studying 3,442 articles. He published his study in Terrorism and Political Violence.

This project compares and explains dynamics of cross-border cooperation among European actors in the field of counterterrorism (CT).

Jelle van Buuren, assistant professor at the Institute of Security and Global Affairs (ISGA), does not understand that Mark van Ostaijen puts away the communication after the attacks like: ‘It is a confused man, you can rest easy.’

Bart Schuurman is a research Fellow at the International Centre for Counterterrorism (ICCT) and at the Institute of Security and Global Affairs (ISGA) in The Hague. He was interviewed by Abigail Esman of the Investigative Project on Terrorism (IPT) about his new book 'Becoming A European Homegrown Jihadist'.…

Safety and security risks ranging from cybercrime to terrorism threats are a growing concern worldwide. Technological developments have made security issues increasingly complex. This is typically a topic for the multidisciplinary Leiden-Delft-Erasmus Universities (LDE) curriculum.

Together with a group of researchers from TU Delft and Erasmus University, Leiden University have received a seed grant for conducting a project “Perceived Risk of Terrorism and its Implications for (Counter-Terrorism) Communication Strategies”.

Joana Cook talks about the Islamist parties increasingly taking power in the last four decades on ABC News.

After an terrorist attack, tough talk often follows. However, this is not the case with prime minister Arden in New-Zealand, says Jeanine de Roy van Zuijdewijn, researcher at the Institute of Security and Global Affairs to the NOS.

On 31 May, during a three-hour live broadcast on the Dutch online television channel Islaam.tv, 100,400 euros was pledged to the Belgian-Moroccan imam Tarik Ibn Ali.

‘It's right and proper that we have policies to prevent terrorism,' says Francesco Ragazzi, university lecturer in International Relations at Leiden's Institute of Political Science. 'But the way the policies are designed and implemented can have unintended consequences. For example, when teachers are…

The fall of the IS caliphate is coming closer. At the same time, the AIVD warned for an increase in the return of especially the hardened warriors. How should Europe handle this? The shrinking of freedoms will only feed terrorist organizations like IS.

Tahir Abbas was named full professor of radicalization studies by the Executive Board. This chair, according to Abbas, is an excellent opportunity for ISGA to broaden its current focus on terrorism and political violence. Abbas was interviewed about his ambitions, writing as a form of relaxation, and…

A research team led by Dr. Yannick Veilleux-Lepage (Institute of Security and Global Affairs) in collaboration with Emil Archambault has secured funding from the Canadian Department of National Defence’s Mobilizing Insights in Defence and Security (MINDS) program to study the use of drones by violent…

Toch kan je volgens dr. Jelle van Buuren dader Tobias R. niet in een bepaald hokje plaatsen. Van Buuren is kenner van het rechts-extremisme en reageert in het Reformatorisch Dagblad op de passages van Tobias R.

At the winter conference of the Dutch Christian student union CSFR, Mark Dechesne, Associate Professor, spoke about the decline in terrorist violence in the Netherlands.